<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title></title>
</head>
<body>

    <input type="text" placeholder="请输入账号">

    <hr>

    <input type="text" placeholder="请输入密码">

    <hr>

    <input type="text" placeholder="请输入年龄">

    <script src="pl/pl.js"></script>

</body>
</html>